Lamp



H. A. DOUGLAS.

LAMP.

APPLICATION FILED APR. 4. I921.

1,41 5,079 Patented May 9, 1922.

UNITED STATES PATENT OFFICE.

HARRY A. DOUGLAS, .01 BRONSON, MICHIGAN.

LAMP.

Application filed April 4,

To all whom it may concern Be it known that I, HARRY A. DOUGLAS, citizen of the United States, residing at Bronson, in the county of Branch and State of Michigan, have invented. a certain new and useful Improvement in Lamps, of which the following is a full, clear, concise, and exact description.

My invention relates to lamps and is of particular utility when embodied in a portable electric lamp. The lamp of my invention preferably includes a handle by which it may be carried and manipulated, a lighting element, such as includes an incandescent lamp bulb, carried by said handle and a. casing for the lighting element also carried by the handle and formed with a closure to protect the lighting element when the lamp is not in use, this closure portion being preferably in the form of a concave reflector that functions as such when it is adjusted to open the aforesaid casing. An electric lamp thus constructed is of partic-' ular service when employed as an inspection lamp in conjunction with an automobile as it may readil be disposed in a tool box or in other locallty where the bulb is apt to be broken unless guarded.

In the preferred embodiment of the invention the casing includes a globular portion and has one or more swinging sections adapted when adjusted to open the casing to serve as reflecting means for the lamp. To

simplify the construction and to increase the reflecting surface, the closure of the casing is preferably divided into halves which meet above the lamp bulb when the casing is closed and which may be swung apart to meet below the lamp bulb when the casing is opened.

I will explain my invention more fully by reference to the accompanying drawing showing the preferred embodlment thereof and in which Fig. 1 is a view illustrating the handle structure and casing in longitudinal section and the lamp structure as-- Specification of Letters Patent.

Patented May 9, 1922.

1921. Serial No. 453,554.

acters 'of reference throughout the different figures.

an incan escent lamp bulb 1 assembled with a metallic shell 2 by means of bayonet pins 3 entering bayonet slots 4 formed in said shell. The lamp filament 5 is suitably connected with contacts 6 that may, for ex ample, be carried directly upon the base of the lamp or may be otherwise connected with the filament. These contacts are engaged by outwardly spring pressed contacts 7 provided upon an insulating carrier 8 which is fixedly held within and with relation to the shell 2 in any suitable way, asifor example by means of an outwardly spring pressed pin 9 registerin with aligned openmgs in the shell 2 and t e contact carrier 8.

, A handle 10 has its forward portion formed ,in fixed relation with the shell 2 by means of the aforesaid outwardly spring pressed pin 9 that also projects into an opening formed in the shell 11 and aligned with the openings in the shell 2 and the contact carrier 8 through which the pin 9 extends. To permit the pin to project outwardly beyond the shell 11 to some extent and to prevent the whole lighting element from turning Within the handle or holder 10, a longitudinal channel 10' is formed in the handle to receive the outer end of said pin. This channel extends clear through to one end of the handle to permit the pin- 9 to be received into and withdrawn from the channel in the process of assemblin the shell 11 and the handle or disassem ling these elements. The upwardly spring pressed contacts 7 are connected with circuit conductors indicated at 12 and 13. These conductors extend through the bore of a sleeve bolt 14 whose inner end is in threaded connection with, the

The lighting element illustrated includes reduced inner end of the shell 11 and whose outer end is formed with a tool receiving slot 15 by which the bolt may be tightened to draw the shell 11 and the llghting element carried thereby into fixed relation with the handle. To this end the outer end of the shell 11 is formed with the flange 16 that engages the inner end of a casing section 17 which is clamped between the flange 16 and the ferrule 18 by the action of the bolt 14. Said casing section 17 is desirably in the form of a hemispherical cup whose rim is forwardly extended beyond the hemispherical portion of the cup to overlap the closure of the casing. This casing closure is desirably also in the form of a hemispherical cup that is preferably subdivided into two substantially equal portions 19 and 20 both of which are hinged upon the complemental casing section 17 to swing upon a common axis. To this end each of the closure sections 19 and 20 is formed with pintle receiving ears 21 which are assembled by pintles 22. The portions of the closure sections 19 and 20 which meet when the casing is closed thereby is desirably formed with registering notches or recesses 23 and 24 which receive positioning lugs 25, fixed upon and with respect to the cup portion 17 of the casing whereby each closure section 19 is limited in its closing movement that it may just engage the other closure section. The

' lugs 25 are desirably provided upon the cupshaped section 17 of the casing by being upon the plates 26 through which the plntles 22 pass, each. pintle beingsuitably headed to maintain it in assembly with the plate 26, the cup 17 and the two e cs 21 through which such pintle passes. ach lug 25 is snugly received in a notch 17 in the casing section 17.

In the embodiment of the invention illustrated in Figs. 1. 2 and 3, the meeting portions of the closure sections 19 and 20 carry the knobbed elements 27 that form a clasp similar to the clasp of a pocket book. When the closure sections are in engagement the knobs engage each other 'to hold them closed in the position determined by the lug 25. When the casing is to be opened these knobs are twisted apart to permit the separation of the casing sections to occupy a fully reversed position, the cup section 17 of the casing being provided with slots 28 which receive the shanks of the knobbed elements 27, these slots being sufficiently narrow so that said shanks may have tight engagement with the casing section 17 when the closure sections 19 and 2.0 are in open position so that said closure sections may be held in such position while the lamp 1s being used. The casing sections 19 and 20 are provided with semi-circular recesses 29 which together receive the outer end of the base of the incandescent lamp bulb 1 when the closure sections are opened. Thesdclosure sections, being hollow and together hemispherical and havin their interior surface bright constitute a reflector when they are adjusted into open position.

When the construction shown in Figs. 7, 8 and 9 is employed the knobbed elements 27 may be dispensed with, for in this alternative construction each lug 25 carries spring fingers 30 that engage beneath closure sections 19 and 20 when these closure sections are closed and are received within the notches 31 in the meeting edges of said 010- sure sections when said closure sections are opened.

While I have herein shown and particularly described the preferred embodiment of my invention I do not wish to be limited to the precise details of construction shown as changes may readily be made without departing from the spirit of my invention, but having thus described my invention I claim as new and desire to secure by Letters Patent the following 1. The combination with a lightin element; of a casing therefor having a c osure in the form of a cup that is divided substantially in. halves, each half of the closure being adjustable from in front of the light ing element.

2. The combination with a lighting element; of a casing therefor provided with a cup-shaped section; and a closure in the form of a cup that is divided substantially into halves, each half of the closure being receivable in the aforesaid casing section to uncover the lighting element.

3. The combination with a lighting element; of a casing therefor having a closure in the form of a cup that is divided substantially in halves, each half section of the closure being adjustable from in front of the lighting element; means carried by the cas-' ing for limiting the movements of the closure sections in closing directions; and means for holding the closure sections in closed positions.

4. The combination with a (lighting element; of a casing therefor provided with a cup-shaped section; a closure in the form of a cup that is divided substantially into halves, each half of the closure being receivable in the aforesaid casing section to uncover the lighting element; means carried by the aforesaid casing section for limiting the movements of the closure sections in closlng directions; and means for holding the closure sect-ions in closed positions.

5. The combination with a lighting element; of a casing therefor having a closure in the form of a cup that is divided substantially in halves, each half section of the closure being adjustable from in front of the lighting element; means carried by the casing f limiting the movements of the closure sections in closing directions; and means for holding the closure sections in closed positions, the closure sections carrying portions which are engageable with complemental portions upon the casing to hold the closure sections in open position.

6. The combination with a, lighting element; of a casing therefor provided with a cup-shaped section; a closure in the form of a cup that is divided substantially into halves, each half of the closure being receivable in the aforesaid casing. section to uncover the lighting element; means carried by the aforesaid. casing section for limiting the movements of the closure sect-ions in closing directions; and means for holding the.

gageable with complemental portions upon the casing to hold the closure sections in open position.

7; The combination with a shell; of a contact carrier within the shell; a holder for said shell formed with a bore'that receives said shell and having a longitudinal channel communicating with said bore and extendin clear through to one end of the holder; an a pin carried by said shell and projecting into said channel.

. 8. The combination with a shell; of a contact carrier within the shell; a holder for said shell. formed with a bore that receives said shell and having a longitudinal channel communicating with said bore and extending clear through to one end of the holder; and an outwardly spring pressed pin carried by said shell and projecting into V said channel. a

In witness whereof, I hereunto subscribe my name this 30th day of March, A. D. 1921.

HARRY A. DOUGLAS. 

